A person reading a book in a Macmillan Support Centre.

Worried about cancer

People worry about cancer for many different reasons. Perhaps someone close to you has been diagnosed. Or maybe you have symptoms you think might be cancer. We have information about the causes, risk factors, signs and symptoms.
What is cancer?

There are over 200 different types of cancer. Each type has its own name and treatment.
Do I have cancer?
Most people worry about their health at some time. Find support and information if you are worried you might have cancer.
The lymphatic system

The lymphatic system helps protect us from infection and disease. Sometimes cancer cells can travel through the lymphatic system, to other parts of the body.
Signs and symptoms
There are many different signs and symptoms of cancer. If you have any of the symptoms listed here, get advice from your doctor, nurse, pharmacist or GP practice.
Cancer screening
Screening helps find some cancers early so that they can be treated as soon as possible. It can also find changes in some cells before they become cancerous.
Causes and risk factors
There are things that can increase your risk of getting cancer. Find out what these might be and the possible changes you could make to reduce your risk.
Family history, genetics and cancer risk
Some people are more likely to develop certain cancers because they have an inherited gene mutation. We have information about genetics and cancer risk.
Pre-cancerous and genetic conditions
Find out more about health conditions and gene changes that can increase your risk of cancer.
Transgender and non-binary people and cancer
Find out more about cancer risk, symptoms and screening, and what to expect from your healthcare team.

Useful information if you are worried about cancer

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How we can help

Call us on 0808 808 00 00
8am to 8pm. It's free to call from landlines and mobiles within the UK.
Email us
Get in touch via this form
Chat online
Every day 8am - 8pm.
Online Community

Chat online anonymously to others who understand what you are going through. Our community is available 24/7 and has dedicated forums where you can get advice and ask our experts.
Find local cancer support services
What's going on near you? Find out about support groups, where to get information and how to get involved with Macmillan where you live.